重力卫星星间高精度测距技术研究  

Study on Inter-Satellite High Accuracy Ranging Technology for Gravity Satellite

作　　者：申健[1] 佘世刚[1] 王锴[1] 何丹[1] 黄欹昌[1] 

机构地区：[1]中国空间技术研究院兰州物理研究所,兰州730000

出　　处：《空间科学学报》2007年第4期342-346,共5页Chinese Journal of Space Science

基　　金：中国博士后科学基金(20060390716);甘肃省自然科学基金(3ZS061-A25-023)共同资助

摘　　要：卫卫跟踪(SST)技术是当前地球重力场测量最有价值和应用前景的方法之一.高精度星间测距系统是低低卫卫跟踪(SST-Ⅱ)重力卫星的关键有效载荷.GRACE卫星携带的K波段测距系统(KBR K Band Ranging System)是一微米量级的测距系统,通过处理高精度的星间距离和距离变化率数据,可以恢复出地球重力场.GRACE后续计划又提出了一种更高精度的激光干涉测距系统.在研究KBR及激光干涉测距系统测量原理的基础上,提出了一种KBR系统的基本结构,详细分析了两种测距系统的关键技术及国内目前的研究水平,提出了我国开展星间测距系统研究的一些建议.Satellite-to-satellite tracking is one of the most promising and valuable methods for gravity field determination. The high accuracy inter-satellite ranging system is the major payload of gravity exploring satellite using satellite to satellite tracking in low-low model. K Band Ranging system （KBR） on the Gravity Recovery and Climate Experiment （GRACE） satellite is a micron-level ranging system. The geopotential is determined by processing precise range or range rate observed between the two satellites. GRACE has ushered in a new era for satellite measurement of the Earth system. The tremendous advances made by GRACE have led to an interest in launching a follow-on mission with even more ambitious scientific goals. A higher accuracy laser interferometric ranging system is proposed for GRACE follow-on mission. A strawman flight design, an error budget, and a demonstration laboratory breadboard are developed in foreign country. Based on the study of KBR and laser ranging system＇s measurement principle, the fundamental structure of KBR was presented in this paper. The key technology of these two ranging system and the current research level of our country are analyzed in detail. At the same time, some suggestions are proposed for the future inter-satellite ranging project of China.

关 键 词：重力卫星 星间测距 K/Ka波段 干涉测量 

分 类 号：V448.25[航空宇航科学与技术—飞行器设计]